.page-nav,
.page-nav-mobile{
  position: absolute;
  top:0;
  width: 100%;
  z-index: 2;
  text-align: right;
  box-sizing: border-box;
}

.page-nav a{
  display: inline-block;
  padding: 0 30px;
  line-height: 62px;
}

.page-nav a.mailto{
  padding-right: 0;
}

.page-nav a.active{
  background-color: rgba(0,0,0,0.5);
  font-weight: 800;
}

.page-nav-mobile{
  display: none;
  padding: 15px 25px;
}

.page-nav-mobile .logo,
.page-nav-mobile .thumb{
  display: block;
  width: 20px;
  height: 20px;
  background: url("../images/common/logo.png") no-repeat;
}

.page-nav-mobile .thumb{
  background-image: url("../images/common/thumb.png");
}

.page-nav-mobile .nav{
  position: relative;
}

.page-nav-mobile .nav .poper{
  position: absolute;
  right: 0;
  width: 60px;
  height: 0;
  margin-top: 5px;
  text-align: right;
  line-height: 1.5;
  overflow: hidden;
  -webkit-transition: all 200ms;
  -moz-transition: all 200ms ;
  -ms-transition: all 200ms ;
  -o-transition: all 200ms ;
  transition: all 200ms ;
}

.page-nav-mobile .nav .poper.show{
  height: 80px;
}

.page-nav-mobile .nav .poper a{
  display: block;
  line-height: 30px;
  color: rgba(255,255,255,0.8);
  border-bottom: 1px solid rgba(255,255,255,0.8);
}

@media(max-width: 700px){
  .page-nav{
    display: none;
  }

  .page-nav-mobile{
    display: block;
  }
}